#app{
    width: 300px;
    height: 320px;
    background-color: gainsboro;
    text-align: center;
    padding-top: 10px;
}
.item{
    width: 300px;
    height: 40px;
    line-height: 40px;
    text-align: center;
}
.item_icon{
    width: 240px;
    height: 100px;
    background-color: #fff;
    line-height: 30px;
    margin-left: 30px;
    color: red;
}